{"id":"GHSA-9qj4-v6r6-3wmx","summary":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All have a Denial of Service via Out of Memory vulnerability","details":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","aliases":["BIT-activemq-2026-50750","CVE-2026-50750"],"modified":"2026-11-04T16:26:03.579683188Z","published":"2026-06-30T12:31:52Z","database_specific":{"nvd_published_at":"2026-06-30T11:16:29Z","cwe_ids":["CWE-400"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-11-04T16:07:51Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50750"},{"type":"WEB","url":"https://github.com/apache/activemq/pull/2083"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/685ab0b7a4618abd25be7d64c3355401581b69e5"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/80562ea8d327b7f538de1ff7672f158fe2abc4c1"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/f3a365e74e85dee6042f324156ace661e0d97f2d"},{"type":"PACKAGE","url":"https://github.com/apache/activemq"},{"type":"WEB","url":"https://github.com/apache/activemq/releases/tag/activemq-5.19.8"},{"type":"WEB","url":"https://github.com/apache/activemq/releases/tag/activemq-6.2.7"},{"type":"WEB","url":"https://lists.apache.org/thread/nhkmbdym61yp6wwy0dny8w1p46sm87kr"}],"affected":[{"package":{"name":"org.apache.activemq:activemq-broker","ecosystem":"Maven","purl":"pkg:maven/org.apache.activemq/activemq-broker"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9qj4-v6r6-3wmx/GHSA-9qj4-v6r6-3wmx.json"}},{"package":{"name":"org.apache.activemq:activemq-broker","ecosystem":"Maven","purl":"pkg:maven/org.apache.activemq/activemq-broker"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9qj4-v6r6-3wmx/GHSA-9qj4-v6r6-3wmx.json"}},{"package":{"name":"org.apache.activemq:apache-activemq","ecosystem":"Maven","purl":"pkg:maven/org.apache.activemq/apache-activemq"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9qj4-v6r6-3wmx/GHSA-9qj4-v6r6-3wmx.json"}},{"package":{"name":"org.apache.activemq:apache-activemq","ecosystem":"Maven","purl":"pkg:maven/org.apache.activemq/apache-activemq"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9qj4-v6r6-3wmx/GHSA-9qj4-v6r6-3wmx.json"}},{"package":{"name":"org.apache.activemq:activemq-all","ecosystem":"Maven","purl":"pkg:maven/org.apache.activemq/activemq-all"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9qj4-v6r6-3wmx/GHSA-9qj4-v6r6-3wmx.json"}},{"package":{"name":"org.apache.activemq:activemq-all","ecosystem":"Maven","purl":"pkg:maven/org.apache.activemq/activemq-all"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9qj4-v6r6-3wmx/GHSA-9qj4-v6r6-3wmx.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}